Monographs Details: Macrocarpaea rugosa Steyerm.
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.
Description:Distribution and Ecology - Distribution. Represented by only two coUections from the Chimanta Massif. VENEZUELA. Estado Bolivar, Chimanta: simple-stemmed tree to 25 feet tall, leaves rugose, calyx dull green, in lower mixed Bonnetia forest, shoulder below summit of Apacara-tepui, 2000-2150 m alt, 20 Jun 1953, Steyermark 75803 (paratypes NY, 2 sheets, VEN); 13 Feb 1955, Steyermark & Wurdack 861 (holotype VEN, isotype NY, 2 sheets).

Discussion:Type. Single-stemmed ligneous plant 3-5 m, leaves erect, rugose on both sides; coroUa dull green; open forested laterite slopes, 2100 m alt. Central Section, Chimanta Massif, Estado Bolivar, Venezuela, 13 Feb 1955, Julian A. Steyermark & John J. Wurdack 861 (holotype VEN, isotype NY). Macrocarpaea rugosa is a most distinctive species because of its large, cordate, rugose leaves, puberulent inflorescence and calyx, and narrow, acute, carinate sepals. Steyermark relates it to M. duquei and M. macrophylla. It is more clearly related to the next, M. piresii, of the Neblinan Brazilian-Venezuelan frontier.
Distribution:Venezuela South America|